Best Ph Minus 18 2026

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Last Updated - 22.07.2026

Best Choice

01

Bayrol

BAYROL PH-Minus 1194114 18 kg

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9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quickly and effectively lowers too high a pH value in the pool
Prevents additional corrosion unlike hydrochloric acid
Fast dissolving acid granules of high chemical purity
Easy and clean dosage thanks to the included measuring spoon

76,70 €
02

Bayrol

Bayrol pH Minus Granules 18 kg

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Prevents additional corrosion unlike hydrochloric acid
High chemical purity
Easy to use
Easily soluble

76,70 €
Value for Money

03

Bayrol

pH Minus Granules 18 kg Bucket

10% Off
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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76,70 € 85,00 €(10% Off off)
04

Cristal

Cristal pH reducer minus granules 18 kg – effective pH regulation – easy to use and dosage – for material-friendly lowering of the pH value without causing corrosion

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9.6

Exceptional

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Main highlights

Top effect, easy to use: acidic reacting granules for pH lowering, easy to use and dosage, easy to solubility, gentle on materials. In contrast to hydrochloric acid, additionally prevents corrosion
Tip: measure your water values once or twice weekly with a water tester to correct the pH of your pool water.
Effective pH regulation: Cristal pH reducer (pH minus) in a practical 18 kg storage set for adjusting your pH value as the basis of your water care steps.
Easy to use: use a pool tester to determine the pH value. To reduce the pH value by 0.1, approx. 100 g pH reducer required per 10 m³ pool content.
Base of water care: the adjustment of the pH value between 7.0 and 7.4 forms the basis of all further care steps.

62,95 €
05

Bayrol

BAYROL pH-Minus Liquid Domestic 20 L Canister - Pool pH Minus Liquid - Lowers the pH Value of Pool Water - Particularly High Purity - Ideal for Automatic Dosing Systems - Liquid pH Minus

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9.3

Excellent

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Quality "Made in Europe" – The high quality level is our top priority at Bayrol. Bayrol care products are produced in Europe using state-of-the-art technology.
PH countersink pool liquid: pH Minus Liquid Domestic quickly lowers too high a pH value above 7.4. The liquid pH regulator provides a particularly high chemical purity, conforms to EN 15078.
Our goal – offer you the best! Trust Bayrol - this is the safest way to swim in hygienically pure and crystal clear water. We have been here for you for more than 65 years.
Optimal care: the pH value is the basis of water treatment. To ensure that all care products work optimally, the pH value should be between 7.0 and 7.4.
Easy pool water care: to reduce the pH value by 0.1, 300 ml per 10 m³ is required. The dosage takes place directly from the delivery container, using the automatic Bayrol dosing system.

61,08 €
06

Höfer Chemie

1 x 20 kg BAYZID pH reducer minus 14.9% by Höfer Chemie for pool and swimming pool to reduce the pH value

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9.2

Excellent

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pH value 7-7.4 is the prerequisite for the optimal effect of chlorine, algae killer and other pool care products, so always check and adjust the pH value first
Request our free PDF pool fibel by email. There you will find helpful tips and tricks for caring for your swimming pool
Lowers the pH value in your pool reliably and quickly - perfect for automatic dosing system or manual dosage
Höfer Chemie Pool care from the Bayzid range supports you in the optimal care of your pool and ensures germ-free water and bathing pleasure in the home pool
Bayzid pH reducer liquid with reduced concentration of sulphuric acid according to the new EU regulation

45,95 €
07

Mr. Perfect

Mr. Perfect - Professional pH Countersink Liquid 20 kg in Storage Canister, Effective Liquid pH Minus for Pools and Hot Tubs, Optimal pH Regulation, Water Balance

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9.0

Excellent

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Use: dosage amount depends on the desired pH value, as well as the pool volume. To reduce pH by 0.1, 700ml per 10m3 is required. Recommendation is based on experience. Use double dosage in hot weather.
Skin-compatible – by adjusting the optimal pH value, eye and skin problems are a thing of the past. Enjoy bathing fun in your pool again from now on
Easy pH regulation: to reduce the pH value by 0.1, approx. 700ml per 10m3 required. Thanks to the practical spout, you can easily dose the ideal amount.
Completely safe – safety comes first: thanks to our gentle 4.9% formula, the Mr. Perfect pH countersink easy and safe to use and store.
Compatible with all pools: the pH minus liquid is compatible with all pools and pumps. Determine the current pH value before use to determine the ideal filling quantity.

43,79 €
08

PROFI Clean

PROFI-Clean pH Minus Liquid pH Countersink 20 kg / 20 Litre Canister | Lowering the pH Value Pool, Whirlpool, Paddling Pool & Swimming Pool

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8.9

Very Good

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Main highlights

Versatile applications: Our pH liquid is not only suitable for pools, but also for hot tubs and other water systems. The perfect solution for all water lovers
Suitable for: pools, public swimming pools, hot tubs, bath ponds & more
Precise pH control: our liquid pH minus is the key to precise regulation of the pH value. Keep the water in your pool or water system in perfect balance.
OPTIMAL WATER QUALITY: Proper pH is critical to maximizing disinfectant effectiveness. With our pH you ensure flawless water quality.
Easy to use: application couldn't be easier. Simply add the recommended amount of granules to the water and enjoy control of the pH without stress.

44,80 €
09

Mr. Perfect

Mr. Perfect - Professional pH Countersink Liquid 10 kg in Storage Canister, Effective Liquid pH Minus for Pools and Hot Tubs, Optimal pH Regulation, Water Balance

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Use: dosage amount depends on the desired pH value, as well as the pool volume. To reduce pH by 0.1, 700ml per 10m3 is required. Recommendation is based on experience. Use double dosage in hot weather.
Skin-compatible – by adjusting the optimal pH value, eye and skin problems are a thing of the past. Enjoy bathing fun in your pool again from now on
Easy pH regulation: to reduce the pH value by 0.1, approx. 700ml per 10m3 required. Thanks to the practical spout, you can easily dose the ideal amount.
Completely safe – safety comes first: thanks to our gentle 4.9% formula, the Mr. Perfect pH countersink easy and safe to use and store.
Compatible with all pools: the pH minus liquid is compatible with all pools and pumps. Determine the current pH value before use to determine the ideal filling quantity.

29,09 €
10

Yechiry

Yechiry HT 1202 Digitales PH-Messgerät, Wasserqualitätstester, 0 Bis 14 PH, 0.01 Auflösung LCD-Hintergrundbeleuchtung Temperaturanzeige für Labore Schulen Wasserquellen Fermentation

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Praktisch für viele Orte】Geeignet für Wasserquellen, Schulen, Hochschulen, Labore, Pharmazie, Fermentation, Chemietechnik, Leitungswasser und Abwasserbehandlungsanwendungen.
【PH- und MV-Modi】 Der PH-Tester unterstützt den PH-Bereich von 0 PH bis 14 PH und den mV-Bereich minus 415 mV bis 415 mV.Der Temperaturkompensationsbereich liegt zwischen 32 und 140 °F und eignet sich für routinemäßige Lösungsmessungen.
【Komplettes Set im Lieferumfang enthalten】Kommt mit HT 1202-Messgerät, nicht aufladbarer Kombinationselektrode, PH4.00-Pufferreagenz, PH9.18-Pufferreagenz, Kaliumchloridpulver, Einweichflüssigkeit, Handbuch und schwarzem Koffer.
【Klares LCD-Display】 Der Wasserqualitätstester verfügt über ein großes dreieinhalbstelliges LCD.Die Hintergrundbeleuchtung schaltet sich nach dem Einschalten automatisch ein und erleichtert so das Ablesen bei Tageslicht oder bei schlechten Lichtverhältnissen.
【Genaue PH-Prüfung】 Das digitale PH-Messgerät misst 0 bis 14 PH mit einer Auflösung von 0,01 PH und einer Genauigkeit von ±0,05 PH.Zeigt PH oder mV zusammen mit der Temperatur an, um eine schnelle Überprüfung der Wasserqualität zu ermöglichen.

71,43 €